About Dr. Chujiro Hayashi
Hayashi is often considered to be Usui's chief disciple and the second Grand Master of Reiki history. He played a major role in the transmission of Reiki out of Japan and for turning it into a less mystical practice.
Up to this point, the Usui sysbem of healing consisted of the energy itself, the symbols, the attunement process and the Reiki ideals. This was what Dr. Usui had receoved during his mystical experience on Mt. Kurama.
Dr. Hayashi went on to develop the Usui system of healing. He opened a Reiki clinic called the Hayashi Reiki Kenkyu-kai in Tokyo and kept detailed records of the treatments given. He used this information to create the standard hand positions, the system of three degrees and their initiation procedures.
In 1940, Hayashi performed seppuku rather than join the war.
For my sources see: Recommended Reading and wikipedia